Java讀寫檔案的方法有很多種形式，分享一下我整理出來的一種情況。

一、讀檔案：

public static void ReadFile() {
		String file_path = "data/newFilename.txt";
		try (FileReader reader = new FileReader(file_path); BufferedReader br = new BufferedReader(reader)) {
			String line;
			while ((line = br.readLine()) != null) {
				System.out.println(line);
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
}
 

二、寫檔案：

public static void WriteFile() {
		try {
			File file = new File("data/newFilename.txt");
			file.createNewFile();
			try (FileWriter writer = new FileWriter(file); BufferedWriter out = new BufferedWriter(writer)) {
				out.write("hello,");
				out.write("world!");
				out.write("ok");
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
}
 

具體怎麼用，或者你想怎麼用，自己再變形吧。

THE END